A wired communication systems, a subscriber device and a method, and more specifically related to initialization and/or update of communication parameters used for communication through the wired communication systems. An access node comprises at least one processor and memory storing instructions that when executed by the at least one processor cause a local transceiver of the access node to transmit signaling data via a subscriber line to a remote transceiver, the signaling data identifying particular symbol positions within a sequence of symbols transmitted over the subscriber line during show-time as being suitable for characterizing a direct communication channel between the local transceiver and the remote transceiver.
Legal claims defining the scope of protection, as filed with the USPTO.
1. An access node comprising at least one processor and memory storing instructions that when executed by the at least one processor cause a local transceiver of the access node to transmit signaling data via a subscriber line to a remote transceiver during transmission of user data via the subscriber line, the signaling data identifying particular symbol positions within a sequence of symbols transmitted over the subscriber line as being suitable for characterizing a direct communication channel between the local transceiver and the remote transceiver.
2. An access node according to claim 1, wherein the characterized direct communication channel is a direct communication channel from a local transmitter within the local transceiver to a remote receiver within the remote transceiver.
3. An access node according to claim 1, wherein the characterized direct channel is a direct communication channel from a remote transmitter in the remote transceiver to a local receiver in the local transceiver.
4. An access node according to claim 1, wherein the characterization of the direct communication channel is restricted to a first portion of a communication spectrum used for communication between the local transceiver and the remote transceiver.
5. An access node according to claim 4, wherein at least one sub-carrier of symbols transmitted during the particular symbol positions and belonging to a second non-overlapping portion of the communication spectrum are modulated with user data or with Robust Management Channel RMC data.
6. An access node according to claim 1, wherein the particular symbol positions correspond to particular SYNC symbol positions.
8. An access node according to claim 1, wherein at least one sub-carrier of symbols transmitted during the particular symbol positions are modulated with a probe sequence chosen from a set of mutually orthogonal probe sequences.
9. An access node according to claim 1, wherein at least one sub-carrier of symbols transmitted during the particular symbol positions are modulated with a pseudo-random data sequence.
10. An access node according to claim 2, wherein the instructions when executed by the at least one processor further causes the local transceiver to transmit further signaling data via the subscriber line to the remote transceiver, the further signaling data being indicative of an allowable type of channel characterization usable by the remote receiver.
11. An access node according to claim 10, wherein at least one sub-carrier of symbols transmitted during the particular symbol positions are modulated with a probe sequence chosen from a set of mutually orthogonal probe sequences, and wherein the allowable type of channel characterization comprises correlating signal measurements performed by the remote receiver during the particular symbol positions on the at least one sub-carrier with elements of the probe sequence used by the local transmitter.
12. An access node according to claim 3, wherein at least one sub-carrier of symbols transmitted during the particular symbol positions are modulated with a probe sequence chosen from a set of mutually orthogonal probe sequences, wherein the characterization of the direct communication channel comprises correlating signal measurements performed by the local receiver during the particular symbol positions on the at least one sub-carrier with elements of the probe sequence used by the remote transmitter.
13. An access node according to claim 1, wherein the particular symbol positions refer to relative positions within a Time Division Duplexing TDD frame, or a logical frame, or a superframe.
14. A subscriber device comprising at least one processor and memory storing instructions that when executed by the at least one processor causes a local transceiver of the subscriber device to receive signaling data via a subscriber line from a remote transceiver during transmission of user data via the subscriber line, the signaling data identifying particular symbol positions within a sequence of symbols transmitted over the subscriber line during show-time as being suitable for characterizing a direct channel (DS, US) between the local transceiver and the remote transceiver.
15. A subscriber device according to claim 14, wherein the characterized direct communication channel is a direct communication channel from a remote transmitter in the remote transceiver to a local receiver in the local transceiver, and wherein the instructions when executed by the at least one processor further causes the local receiver, in response to the reception of the signaling data, to characterize the direct communication channel during the particular symbol positions.
17. A subscriber device according to claim 15, wherein the characterization of the direct communication channel comprises correlating signal measurements performed by the local receiver during the particular symbol positions on at least one sub-carrier with elements of a probe sequence chosen from a set of mutually orthogonal probe sequences and used by the remote transmitter to modulate the at least one sub-carrier during the particular symbol positions.
18. A subscriber device according to claim 14, wherein the characterized direct communication channel is a direct communication channel from a local transmitter in the local transceiver to a remote receiver in the remote transceiver, and wherein the instructions when executed by the at least one processor further causes the local transmitter, in response to the reception of the signaling data, to modulate at least one sub-carrier of symbols transmitted during the particular symbol positions with a probe sequence chosen from a set of mutually orthogonal probe sequences or with a pseudo-random data sequence.
19. A method for initializing or updating communication parameters within a wired communication system, the method comprising transmitting signaling data via a subscriber line from a local transceiver of an access node to a remote transceiver during transmission of user data via the subscriber line, the signaling data identifying particular symbol positions within a sequence of symbols transmitted over the subscriber line during show-time as being suitable for characterizing a direct communication channel between the local transceiver and the remote transceiver.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
October 22, 2020
April 25, 2023
Browse 5M+ US patents with plain-English claim translations and AI-generated analysis.